On sauna nights you slept 33 min more, on average
From 18 sauna nights and 43 other nights
Every sauna and cold plunge, counted.
Toasty is a sauna and cold plunge tracker for iPhone. Log a session in a few taps once you’re out, and watch your weekly minutes, streak and patterns add up. Prefer a timer? It runs from your Lock Screen.
Coming soon to theApp Store
7 days free, then $19.99 a year.
Or $39.99 once.
Log it once you’re out
Most people leave their phone in the locker, and plenty of saunas ban them anyway. So Toasty never needs one inside: log the session when you’re dressed, or run a timer if you like one.
Log it after
A few taps. Toasty fills in your usual place, temperature and time from your last visit, and you can change any of it or pick an earlier day.
Or just tell Siri
Say “Log a sauna in Toasty” on the way home. Your usual session is saved without opening the app, and Siri tells you where your week stands.
Prefer a timer?
Start one at the door from the Lock Screen, Control Center, the Action button or your Apple Watch, and tap I’m out on the way back. The chime is loud enough to hear from the changing room.
A goal for the week, so a rest day costs nothing
Toasty counts minutes across the whole week. It starts you at 57 minutes in the heat and 11 in the cold, the weekly totals from Susanna Søberg’s research, as a starting point you can change.
- Spread the minutes over a few sessions. Toasty never asks you to stay in longer to close a ring.
- Your streak counts full weeks. Skip Wednesday and it holds.
- Log a session late or fix one, and the streak recounts from your history.
41/57sauna minutes
8/11cold minutes
6-week streak
Sample week- M
- T
- W
- T
- F
- S
- S
Heat, cold or both
Tell Toasty what you do and it shows only that. Switch one off later and its history stays.
In the heat
Sauna, infrared sauna, steam room, hot tub or hot bath. Save the places you go with their usual temperature and humidity, in °C or °F, so starting a session is one tap.
- Home barrel80 °C · 20%
- Gym sauna90 °C
- Steam room45 °C · 100%
In the cold
A countdown for plunges and cold showers, with a breathing guide and a +30 sec button, on your iPhone or Apple Watch. Water temperatures go down to −2 °C (28 °F).
Heat 15Cold 2Heat 15Cold 2Track both and Toasty can walk you through contrast rounds, back and forth between the two.
Apple Health, set up the way you’d want it
What Toasty saves
Sessions go to Apple Health as workouts. Calories are off by default, so sitting in the heat doesn’t fill your Move ring. Mindful minutes and mood are there if you want them.
- Save sessions as workoutsShows up in Fitness and Health
- Count caloriesOff keeps your Move ring honest
- Log mindful minutesYour choice
- Save how you felt as moodFrom your quick check-in
What it reads, and what it won’t claim
With your permission, Toasty reads your sleep, HRV, resting heart rate and heart rate, then lines them up with your sessions. Every finding says how many nights it rests on, and stays at Too early to say until there’s enough to go on.
Resting heart rate averaged 2 bpm lower in full sauna weeks
From 7 full weeks and 5 lighter ones
Sample data. Toasty shows what happened alongside your sessions, not what caused it. Not medical advice.
Your log stays yours
Edit anything
Change, backdate or delete any session. Each one is saved the moment it starts, so closing the app halfway through doesn’t lose it.
No account
There’s no sign-up and no email. Your sessions are stored on your iPhone. Export them as a CSV file whenever you like, and if your subscription ends, your history and the export stay open to you.
Calm mode
Not into goals and streaks? Calm mode hides them, along with the stats, and leaves a quiet log of when you went.
Try it for a week, then pick a plan
Both plans include everything: heat and cold, goals and streaks, your patterns, the Home Screen widget and the Lock Screen Live Activity.
Yearly$19.99 a year7 days free, then $1.67 a month, billed once a year
Lifetime$39.99 oncePay once and keep it
Purchases go through your Apple ID. Cancel the trial in your iPhone’s Settings before the 7 days are up and you won’t be charged.
Coming soon to theApp Store
Questions
Do I need an Apple Watch?
No. Toasty runs on your iPhone, and the iPhone stays outside. If you have one, the Toasty Watch app starts and ends sessions and runs the plunge countdown on your wrist. Apple doesn’t recommend wearing Apple Watch in a sauna or steam room, so we suggest leaving it outside the heat.
Do I have to use the timer?
No. Most people log the session once they’re out: a few taps, with your usual place and times filled in, or say “Log a sauna in Toasty” to Siri. Your week and streak count it exactly as if you had timed it.
Do I need an account?
No. There’s nothing to sign up for. Your sessions are stored on your iPhone, and you can export them as a CSV file.
Which iPhones does it work on?
Any iPhone running iOS 18 or later. The Action button start needs an iPhone that has one, and the Watch app needs watchOS 11 or later.
Will Toasty tell me how long to stay in?
No. It times what you choose to do and adds it up for the week. Weekly goals are meant to be spread over several sessions, and Toasty never suggests a longer one.
When can I get it?
Toasty is coming to the App Store soon, for iPhone and Apple Watch.
More answers on the support page.
See you at the door
Toasty is coming to iPhone soon. It starts with a 7-day free trial.
Coming soon to theApp Store